[Bug 1453740] [NEW] do-release-upgrade crashes with message : "UnicodeDecodeError: 'utf-8' codec can't decode byte 0xae in position 337: invalid start byte"

[Philippe Schelte]

Public bug reported:

for dist upgrade from Ubuntu 14.04 LTS to the next "normal" release, when I make a do-release-upgrade -d, I get this error :
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xae in position
337: invalid start byte
I have cleaned all the files in /etc/apt/sources.list.d/
but no change in order to remove all unencoded characters like accent etc...

# lsb_release -rd
Description:    Ubuntu 14.04.2 LTS
Release:        14.04

** Affects: update-manager-core (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "main.log"
   https://bugs.launchpad.net/bugs/1453740/+attachment/4395359/+files/main.log

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https://bugs.launchpad.net/bugs/1453740

Title:
  do-release-upgrade crashes with message : "UnicodeDecodeError: 'utf-8'
  codec can't decode byte 0xae in position 337: invalid start byte"

Status in update-manager-core package in Ubuntu:
  New

Bug description:
  for dist upgrade from Ubuntu 14.04 LTS to the next "normal" release, when I make a do-release-upgrade -d, I get this error :
  UnicodeDecodeError: 'utf-8' codec can't decode byte 0xae in position
  337: invalid start byte
  I have cleaned all the files in /etc/apt/sources.list.d/
  but no change in order to remove all unencoded characters like accent etc...

  # lsb_release -rd
  Description:    Ubuntu 14.04.2 LTS
  Release:        14.04

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